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"""Collection of tests around loading extensions."""
import pytest
from cookiecutter.environment import StrictEnvironment
from cookiecutter.exceptions import UnknownExtension
def test_env_should_raise_for_unknown_extension():
"""Test should raise if extension not installed in system."""
context = {'cookiecutter': {'_extensions': ['foobar']}}
with pytest.raises(UnknownExtension) as err:
StrictEnvironment(context=context, keep_trailing_newline=True)
assert 'Unable to load extension: ' in str(err.value)
def test_env_should_come_with_default_extensions():
"""Verify default extensions loaded with StrictEnvironment."""
env = StrictEnvironment(keep_trailing_newline=True)
assert 'cookiecutter.extensions.JsonifyExtension' in env.extensions
assert 'cookiecutter.extensions.RandomStringExtension' in env.extensions
assert 'cookiecutter.extensions.SlugifyExtension' in env.extensions
assert 'cookiecutter.extensions.TimeExtension' in env.extensions
assert 'cookiecutter.extensions.UUIDExtension' in env.extensions
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